In this talk I will review the general ideas of electroweak baryogenesis
and the constraints that this baryogenesis scenario imposes on the MSSM
spectrum. In particular, the model predicts a very heavy left-handed stop,
while the right-handed scalar top has to be lighter than the top quark.
Therefore, the cleanest method to probe the model is to look for direct
production of the light stop at LHC. An alternative procedure is to study
the role that the stop plays in the production and decay rates of the
Higgs. As it will be explained, this method proves that there is some
tension between the predictions of the model and the present LHC data.